事实：怀孕测试使用青蛙-Frogs Were Used In Pregnancy Tests
时间：2018-12-19 作者：英语课 分类：Facts-事实
英语课
Pre-Listening Vocabulary
in demand: wanted by many people
import: to bring in from another country
lab: short for laboratory; a place where scientific experiments and tests are run
hormone 1: a substance that regulates or activates 2 something in the body
fungus 3: fast growing organisms that feed on organic matter
Frogs Were Used In Pregnancy 4 Tests Between 1930-1950, African clawed frogs were in great demand. These frogs were imported all over the world and used in labs for pregnancy tests. Technicians injected a sample of a woman’s urine into a female frog’s hind 5 leg. If the frog began producing eggs, the woman’s pregnancy hormone was present. The same frogs were used over and over. When hospitals no longer had any use for the frogs, they were released. This resulted in an environmental disaster. African clawed frogs can carry a dangerous fungus. Hundreds of amphibian 6 species have declined because of this fungus.
1 hormone
n.荷尔蒙，激素，内分泌
- Hormone implants are used as growth boosters.激素植入物被用作生长辅助剂。
- This hormone interacts closely with other hormones in the body.这种荷尔蒙与体內其他荷尔蒙紧密地相互作用。
2 activates
使活动，起动，触发( activate的第三人称单数 )
- Activates the window and displays it in its current size and position. 激活窗口，保持当前的大小及位置不变。
- Pulling out the alarm switch activates alarm and pushing it deactivates it. 闹钟的开和关是通过拔出和按入闹铃开关实现的。
3 fungus
n.真菌，真菌类植物
- Mushrooms are a type of fungus.蘑菇是一种真菌。
- This fungus can just be detected by the unaided eye.这种真菌只用肉眼就能检查出。
4 pregnancy
n.怀孕，怀孕期
- Early pregnancy is often accompanied by nausea.怀孕早期常有恶心的现象。
- Smoking during pregnancy increases the risk of miscarriage.怀孕期吸烟会增加流产的危险。